I'm just curious as to why everyone doesn't want kids. I have a multitude of reasons myself. First off, for selfish reasons, I simply have never had any desire whatsoever. I'm 28, and I thank the Flying Spaghetti Monster every day of my life that I'm not a breeder. I rarely ever meet anyone who is actually happy with their kids. Sure, in between complaints, they might say, "nah, but I really love them," but I think a lot of people had them on accident or didn't know what they were in for.
Regardless of how breeders end up feeling, I just don't like kids that much. They can be fun to hang out with sometimes if they are well parented, but I wouldn't want to take one home to stay. They take up too much time and attention and I don't find them all that interesting. I want to be able to move and travel, not having to worry about finding a babysitter, or taking them with me on vacation, or dragging them away from their friends to move to a new state. I've always enjoyed having a lot of time to myself, and if I had kids, I'd hardly have that.
From an unselfish view, I don't think I have the right to bring someone into this world. It's not my life - not my choice. This world is pretty messed up. All sorts of shit can happen: rape, assualt, murder, accidents, mental illness, other diseases, etc. If I can guarrantee someone's happiness, I don't think it's right of me to bring them into this world. Then, there's the enviornment. I don't want to make myself have an exponential carbon foot print by breeding. We already use too many of the earths resources and cause a lot of pollution. One of the best ways to help with that is to not create another human.
On a side note, I did a ten-minute speech in college for speech class on this very subject and a lot of the written comments I got back were dumb shit like "this guy is depressed; he should get help." It's pretty dumb when people think there's something wrong with you because you acknowledge the dangers of this world and are sympathetic about how that will affect future children.